Type-writing machine.



PATENTED MAY 26, 1908.

M. W. POOL. TYPE WRITING MACHINE.

APPLICATION FILED MAR.13. 190s.

WITNESSES:

|NVENTE|R= TTDRNEY HIS have invented certain new and useful UNITED s'r TES- PATENT OFFICE.

MORRIS W. POOL, OF NEW YORK, N. Y. ASSIGNOR TO THE MONARCH TYPEWRITER COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Application filed. March 18, 1905. Serial No. 249,889.

To all whom it may concern:

Be it known that I, MORRIS W. PooL, citizen of the United States, and resident of the borough .of Brooklyn, cit of New York, in the county of Kings and tate of New Ytilk,

mprovenients in Type-.Writing Machines, of which the followin is a specification. My invention re ates more particularly to the type bar actuating mechanism of typewriting machines. The main object of the invention is to improve the connection between the type bar and. its actuating mechanism.

To the above and other ends the invention consists in the features of construction and combinations of devices hereinafter fully set forth and particularly pointed out in the claims. i

In the accompanying drawings, Figure 1 is askeleton view in sideelevation of a type bar and its actuating mechanism; Fig. 2 is an enlarged fragmentary top plan view; Fig. ,3 is a view taken one plane indicated by the line a: of Fig. 2; Fig. 4 is a view similar to Fig. 3, but showing the parts in positions diiferent from those in which they appear in said figure, andFig. 5 is an enlarged fragmentary side elevation, partly in section, of a modification.

In the drawings 1 indicates the frame work of the machine, 2 a platen, 3 one of a series of key levers fulcrumed on a fulcrum plate 4 and having a restoring spring 5 ivoted to each key lever at 6 is a sub-lever 7 ,the lower portion whereof cooperates with a'fixed abutment 8. The upper end of each sub-lever is connected by a hnk 9 with a type .bar 10in a manner hereinafter fully vdescribed. Each type bar may be pivoted in a hanger 11 secured to a hanger support 12 and is' adapted to coact with the platen 2 when the associate key lever 3 is adequately depressed. v

As best appears in Figs. 3 and 4, the rear up Ker -portion of the main central part -of eac ty e bar 10 is cut away at 13 and to each s1 e of this rear portion a side member or check piece 14 is secured in any suitable manner, referably by rivets 15. The tail of the type Ear, comprising the two cheek pieces and the centralportion, is perforated to receive a ivot in 16 which passes through the three ies 0 metal at right angles to the outer faces of the cheek pieces. The pivot pin has its bearings in the associate hanger 11. The cheek pieces 14 are sha edto conform to the rear end of the centra part of the Patented May26, 1908.

type bar, the construction providing a long seat for the pivot of the bar andenabling said pivot 'to be held securely in osition. Above the cut-away 13 of the centra part of the type bar the inner face of each cheek piece is formed with a recess or depression 17, the shape of which is most clearly indicated in Figs. 2 and 4. It will be noted that the center part of the type bar is also further cut away at 18, forming, with the depressions 17 in the cheek pieces, a seat or pocket. adapted to receive the rounded sphericalor ball-shaped forward end 19 of t e connecting link 9. When the spherical end 19 of the link'is in position in this bearing pocket, the mouth of the latter is closed by a member, which, as shown in Figs. 2

to 4 is in the form of a spring piece 20 which is secured to the type bar in any suitable manner as by a rivet 21. The forward end of the retaining member 20 is bent inwardly at 22 and shaped to conform with the surface ofthe spherical portion 19 with which the part 22 normally contacts. The link 9 may be connected with its'associate "sub-lever 7 in any suitable manner. As

herein shown the rear end of the link is fiattened and perforatedat 23 to receive a rivet 24 which also passes t rough the sub-leverand connects the latter with the link 9.

In practice the key levers and their associate sub-leversand connecting links are assembled in the machine and the type bar hangers with the type bars pivoted thereinare radially adjusted and secured on the su port 12. 1 Each type bar in turn may then e raisedslightly from normalposition, as'indi;

cated in Fig. 4. The s ring guard or retainer 20 may then be u ed away from the bar, as indicated in sair figure, and the associate link 9 may be swung down between the inner faces of t e cheek pieces 14, so that the spherical end 19 will enter the mouth of the pocket-like bearing formed by the depression 17 in the cheek pieces and the depressed art 18 of the central part of the typtp bar. he spring guard or retainer 20 may t en be released so that it may move back until the part 22 contacts with the spherical end 19 of the link 9. By the employment of this construction a saving of time is effected in asseinbling the parts of the type bar actuating mechanism, as it is only necessary to mount and adjust the parts in the machine in the manner described and then to pull the spring guard or retainer far enough away from the type bar to permit the rounded end of the connecting link 9 to he slipped into its bearing in the type bar. Any type bar and hanger may be removed from the machine without" disturbing its associate actuating mechanism by manipulating the retainer 20 and the link 9 in the manner illustrated in Fig. 4.

I have shown my invention embodied in a construction resembling generally that of ample of such changes is illustrated in F 1g. 5

of the drawings, wherein is shown a type bar 25, the rear portion of which is thickened as indicated at 26. The face 27 of the thickened portion which normally is vertically disposed is formed with a pocket-like depression 28 which is threaded to r'ceive a screw 29. A slot formed in the rear part of the bar corresponds to the opening between the inner faces of the cheek pieces in the first described construction and said slot )ermits lay of the link 9 therein. "i When the type bar is of the construction justdescribed it and its associate mechanism may be assembled in the machine as hitherto explained and when the bar is'swunga-to the printing point the spherical end 19 of the link is dropped into the pocket-like bearing 28 and then the retaining screw 29 is screwed into place, the bottom of said screw being cupped out to conform to the surface of the spherical end of the link and contacting with said end when in place. in 5 the type bar is represented as in printing position, but it is to he understood that the balland socket joint may be connected and disconnected when the bar is in a position corresponding Fig.

to that shown in Fig. 4. The construction" shown in Fig. 5, it will be observed, enables a one piece type barto'be employed and-requires only snch. manipulation as described 0 connect or disconnect the type bar and its associate link. i H

The ball andsocket connection between the type bar and its actuating mechanism shown in my present invention permits the parts to move in different planes without causing any bind. The slot 30 in the m-odification and the corres )onding space between the check pieces in the first described con struction form a trough wherein the connect: ing link may play freely up and down or from side to side or intermediately, thereby of the'othertype bars.

its two pivots, thereby conducing to uniform wear in the type bar bearings. During the operation of the machine actuatingimpulses are communicated to the type bar from the spherical endj19 through the bottom and sides of its pocket-like recess or'elongat'ed open mouth socket, and the part closing the mouth of the recess receives little, if any, stress or thrust from the link 9. The con structionsdescribed are such that each type bar may bereadily' disconnected from or connected with its actuating mechanism from the front of the machine without disturbing any Various other changes" in details of construction and arrangements of parts may be effected within thescope of the invention.

What I claim as.new and desire to secure by Letters Patent, is:'- I

1. In a type bar action, the combination of a type barhaving an elongated open mouth socket; an actuating link provided with a ball which occupies the bottom portion of the socket, the mouthportion of said socket extending beyond the ball; and a closure occupying the extended mouthportion of said socket.

2. In a ty e bar action, the combination 190 of a type iiar having an open-mouthed socket, said socket having closed sides; an actuating link having a ball seated in said socket, and a retaining device normally -located in the mouth of the socketand mov- 05 able outward through the mouth of said socket to permit detachment of said ball from said socket. c,

3. 1 11 a typewriting machine, the combination of a ty e bar having a recess therein; 11 a connecting ink having a rounded end fitting into said recess; a member normally closing the mouth of said recess and adapted to be moved so as to permit the link to be disconnected from the type bar; and means for actuating said link, the construction being such that relative movement only between the link and type'bar may effect disconnection of said link from said type bar.

4. In a typewriting'machine, the combination of a ty e bar having a recess therein; a connecting 'nk having a rounded end fit-- ting into the recess in the type bar; a member normally covering the mouth of the recess-and contacting withthe end of the link, 12 said member being adapted to be moved to permit said link to be disconnected from said -type bar; and means for actuating said link,

the construction being such that relative movement only between the link and type bar may efiect disconnection of said link from said type bar.

5; In a typewriting machine, the combination of a type bar having a recess and a trough-like portion; a connecting link adapted to play in said trough-like portion and having a rounded end fitting into the recess in the type bar; a spring retainer ada ted to confine the rounded end of the link within the recessin the type bar, said retainer being adapted to yield so as to permit the link tobe separated from the type bar; and means for actuating said link;

' 4 6. In a typewriting machine, the combination of a type bar having an open mouthed bearing therein; a link provided with a rounded end normally seatedin said bearing; a spring retainer normally-contactingwitln the end of the link and. closing the mouth ofthe bearing, said retainer being adapted to be moved to permit the link to.

be withdrawn from its bearing; and means for actuating said link.

7. In a typewriting machine, the combination of a ty e bar having an open mouthed socket; a ball connected with said ball at one end; actuating-means connected with the other end of said link; and means normally confining the ball within said socket; said means being adapted to be moved to permit the ball to be withdrawn from its socket, the construction being such that relative movementonly between the link'and ty e bar .ma efi'ect disconnection of said linr from sald type bar.

8. In a typewriting machine, the combination of a ty' e bar havingan open mouthed socket; a ball fitting in said socket; a link connected with said ball at one end; actuating means connected with the other. end of said link; and a spring retainer normally contacting with the ball and closing .the mouthof'the socket, said retainer being adapted to yield to permit the .ball to bewith-,

drawn from the socket.

fitting in said socket; a'link 9. In a typewriting machine, the combi. nation of a ty e bar having an open mouthed socket; a ball fitting in said socket; a link connected with said ball at one end; actuating means connected with'the other end of said link; and means normally closing the mouth of said socket, the parts being so arranged that the median plane of the ty e bar, always passes through the center of t e ball when the parts are operatively connected, the construction being such that relative movement only between the link and type bar mav effect disconnection of said lin from said type bar.

10. In a typewriting mach ne, the combination of a ty e bar having an open mouthed socket; a bal fitting in said socket; a link connected with said ball at one end; actuating means connected with the other end of said link; and a spring retainer normally contacting with the ball and closing the mouth of the socket, said retainer being adapted to yield to permit the ball to be adapted to play in said trough and provided with a rounded end bearing in the side plies of'said type bar; and a device secured to the type bar and cooperating with the rounded end of said link to prevent its displacement from its bearing.

I Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York, this 11th day of March, A. D. 1905.

I MORRIS W. POOL.

5 Witnesses E. M. WELLS, M. F. .HANNWEBER. 

